The Keyhole Nebula in NGC 3372 Carina Nebula (Alex Woronow)

Celestial hemisphere: Southern · Constellation: Carina (Car) · Contains: Carina Nebula · Foramen · NGC 3372 · eta Car · eta Car Nebula

Powered byPixInsight

The Keyhole Nebula in NGC 3372 Carina Nebula

Powered byPixInsight

The Keyhole Nebula in NGC 3372 Carina Nebula

The Keyhole Nebula in NGC 3372 Carina Nebula

OTA: CDK 17

Camera: SBIG STXL1102 w/ AOX & FW8G

Observatory: Heaven’s Mirror, Chile

EXPOSURES:

Red: 8 x 900 sec.

Blue: 8 x9600

Green: 8 x 900

L: 6 x 900

H: 12 x 900

S: 13 x 900

O: 15 x 900

Total exposure 20 hours

Image Width: ~42 arcseconds

Processed by Alex Woronow (2020) using PixInsight, Skylum, Topaz, SWT

The historic Keyhole Nebula, just above the star Eta Carinae in the center of this picture, was drawn by John Hershel in 1840 using an 18.5” telescope he brought from England to S. Africa. But his drawing appears considerably different from what recent photographs reveal. However, since the time of the drawing, Eta Carinae underwent an immense explosion, and the debris from that explosion (creating the Homunculus Nebula around Eta Carinae) could have altered the lighting of the Keyhole Nebula. Image B at the right is a copy of John Herschel's drawing of the Keyhole Nebula...yes, it surely did look different!

The posted image is downsampled to about 70% of the original size.

Final
Original
B

B

Description: Herschel's drawing of the Keyhole Nebula done in 1840 from S. Africa

Uploaded: ...

Astroimaging from Chile
Image the Universe
Narrowband imaging
Objects of the South - negative declination only
PixInsight Addicts

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	3675424
PixInsight job	Y8VV8SH32QZHIXDOLE7NTNVPATP28I9Q
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	10h44m39s.724
RA (top/left)	10h41m49s.730
RA (top/right)	10h44m04s.401
RA (bottom/right)	10h47m27s.354
RA (bottom/left)	10h45m15s.874

Dec (center)	-59°40′56″.43
Dec (top/left)	-59°54′35″.28
Dec (top/right)	-59°15′58″.51
Dec (bottom/right)	-59°27′03″.69
Dec (bottom/left)	-60°05′53″.56

Image Index:

Contribution Index (beta):

The Keyhole Nebula in NGC 3372 Carina Nebula

The Keyhole Nebula in NGC 3372 Carina Nebula

Equipment

Acquisition details

Description

Comments

Revisions

B

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

The Keyhole Nebula in NGC 3372 Carina Nebula

The Keyhole Nebula in NGC 3372 Carina Nebula

Equipment

Acquisition details

Description

Comments

Revisions

B

Sky plot

Histogram

In these public groups

Notifications

AstroBin is in READ ONLY mode

Sorry :-(

Sorry :-(

Sorry :-(

Are you really sure?

Warning!

Warning!

Are you sure?

Report abuse

Slideshow settings

IOTD/TP stats (last [x] days)

Distribution of astrophotographers

Distribution of subject types

Distribution of data sources

Sorry

Sorry

Share

Upload new revision

Upload uncompressed source (XISF/FITS/PSD/TIFF)

Delete image and all its revisions?

Delete original image?

Delete all other versions?

Delete all revisions?

Delete this revision?

IOTD/TP stats

The following people like this image

The following people bookmarked this image

Warning

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information